Sulphur Springs was noted in numerous early explorer and emigrant diaries. It was the first of several notable springs encountered in the Soda Springs area. When the wind is right, the distinct rotten egg odor can still be easily detected along Highway 30 east of town. The cold water and bare ground continues to emit sulphur smelling gas in a bubbling “plip-plop” manner reminiscent of hot pots in Yellowstone Park. Travel one mile east of US 30 on the Sulphur Canyon road to the first road junction. A National Park Service interpretive sign is one hundred yards east on the left hand “primitive” road.